Including nuclear and hydro in the 1/3 is kind of deceptive since both sources are actively been phased out (c.f. Germany).
Wind and solar generate just over 1/10 of global energy, although it's increasing every year.
I don't know why you're bringing Germany specifically into this (misdirection? deception?) The overwhelming majority of hydrogen production comes from fossil fuels no matter what country you look at. If you replaced all the nuclear and hydro in the world with solar power, most hydrogen production would still be coming from hydrocarbons. Germany produces about 10% of their electrical energy with solar power, so do you think they produce 10% of their hydrogen with solar powered electrolysis? Hell no they don't.
Electricity -> hydrogen sucks even if you have a 100% solar grid. "Green hydrogen" cannot compete with batteries. Hydrogen only looks kinda okay relative to batteries if you're getting the hydrogen cheap by breaking apart hydrocarbons instead of water (aka "gray hydrogen"), and even then it sucks and has gotten out competed.
Neither, here's why:
> Germany shut down three of its six nuclear power stations last year [i.e. 2021] and is due to close the remaining trio by the end of 2022.
Source: https://www.politico.eu/article/gas-crisis-germany-nuclear-p....
More recently Germany has removed the 2022 deadline for the remaining 3 and is considering reversing the whole decision.
California is also set to shut down their final remaining nuclear power plant.
Source: https://calmatters.org/environment/2022/06/california-nuclea...
That’s 1.7% of the worlds population, which is definitely a solid representation of the world.
Just as an aside, there is this little known country: China, it has 47 active nuclear power plants with ~10 more under construction and 15-20 more in the planning stage. But maybe they haven’t heard about Germany and California!
Getting hydrogen by splitting water: https://en.wikipedia.org/wiki/Green_hydrogen
> Green hydrogen produced by the electrolysis of water is less than 0.1% of total hydrogen production.
This is not the way it's done, and it's not because we don't have enough solar panels. It's because electrolysis sucks. Hypothesize a country where 100% of the grid is run off solar if you want to, "green hydrogen" is still dead on arrival.
Uh .. who has phased out hydro?
> Dams are now being removed at a rate of more than one a week on both sides of the Atlantic.
> The building of dams in Europe and the US reached a peak in the 1960s and has been in decline since then, with more now being dismantled than installed.
A major reason why:
> Many large-scale hydropower projects in Europe and the US have been disastrous for the environment.
Source: https://www.bbc.com/news/science-environment-46098118
Together, solar/wind/nuclear/hydro produce about a third of all the world's electrical generation. Despite this, only 4% of hydrogen production in 2020 used electrolysis; 95% was produced from fossil fuels.